Been riding for 53 years. Been on most of them. You will not notice 10/20hp on a cvo! Alot of money for not much gain! Good tour bic. as is!
Well I have two CVO's a 2012 and a 2013.
The 12 is a road glide with fuel moto head pipe (no cat) and fuel moto Jackpot pro tour mufflers, TTS tuner and a dyno tune done. 114 peak torque, just over 11 more than stock, and the hp is about 11 over stock, 94. You can feel the difference. Not huge but noticeable.
Now my 13 CVO king is 10 pounds lighter than my road glide according to HD. The motor had had pistons, cams, heads, TB, and injectors done, Fullsac head pipe, and mufflers. TTS tuner and a good dyno tune. 121/121 SAE hp and torque, graph is posted in another thread. Very long flat curve. Over 110 torque by 2700 RPM and stays over 110 until after 5700 rpm. I can feel a huge difference over my 12 CVO.
Power band is much wider and longer on the 13, very very noticeable.
Really noticeable when you ride the bikes back to back. Feels like my 12 is really lacking coming out of a mountain curve.